#51BB3B#51BB3B

#51BB3B is a light, vivid green. Relative luminance 0.376; OKLCH L 70.4% C 0.192 H 140.5°. Best body text is #000000 at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#51BB3B
RGB	rgb(81, 187, 59)
HSL	hsl(110, 52%, 48%)
HSV	hsv(110, 68%, 73%)
CMYK	cmyk(56.7%, 0%, 68.4%, 26.7%)
CIE-LAB	lab(67.73, -54.12, 53.41)
CIE-LCH	lch(67.73, 76.04, 135.38°)
OKLab	oklab(70.38% -0.1482 0.1223)
OKLCH	oklch(70.38% 0.192 140.5)
XYZ	xyz(21.9521, 37.6039, 10.2383)
Luminance	0.3761 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB3B #A53BBB

analogous

#91BB3B #51BB3B #3BBB65

triadic

#51BB3B #3B51BB #BB3B51

tetradic

#51BB3B #3B91BB #A53BBB #BB653B

square

#51BB3B #3B91BB #A53BBB #BB653B

split-complementary

#51BB3B #653BBB #BB3B91

monochromatic

#295E1E #3D8C2C #51BB3B #77CE65 #A0DD93

Accessibility & contrast

On white

2.46

#51BB3B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.52

#51BB3B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB3B

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB3B	#FFFFFF	#000000	##000000
##51BB3B	1.00	2.46	8.52	8.52
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.52	21.00	1.00	1.00
##000000	8.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0AA29

Deuteranopia (green-blind)

#B2A247

Tritanopia (blue-blind)

#44B5A1

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51bb3b;
/* rgb */ color: rgb(81, 187, 59);
/* oklch */ color: oklch(70.4% 0.192 140.5);

Tailwind

colors: {
  custom: {
    50: '#8dd077',
    500: '#51bb3b',
    950: '#000000',
  },
}

SCSS

$custom: #51bb3b;
$custom-light: #8dd077;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb3b",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 59
  },
  "hsl": {
    "h": 109.688,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.7038,
    "c": 0.19217,
    "h": 140.5
  },
  "luminance": 0.37606
}

Semantic roles & 50–950 ramp

primary

#51BB3B

secondary

#BD8AC8

accent

#4CDBC3

background

#F9FCF7

surface

#F1F9EE

border

#CBD2C9

text

#0D1409

muted

#7E827B

Preview Lab

Preview with #51BB3B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →